It is very convenient to check the slope of the drain piping. What I need is primarily 1/50/1/100/1/150, but you can understand the gradient simply by placing it on a pipe like a normal leveling device.

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All of the products MonotaRO Singapore offers are subject to Japanese local laws, regulations, and certification standards.
Please make sure that it may or may not meet requirements of your country and/or international organizations,
including but not limited to, UL Certification, China Compulsory Certificate system, and Halal.
MonotaRO Co.,Ltd. Hyogo Public Safety Commission No.631330800020